﻿// Written by Lars Corneliussen
// http: //startbigthinksmall.wordpress.com/2008/10/30/beautyofcode-jquery-plugin-for-syntax-highlighting/

jQuery.beautyOfCode = {
    initialized: false,

    settings: {

        // hide line numbers?
        noGutter: false,

        // show copy, plain, ... links
        addControls: true,

        // collapse to control bar. cant be used
        // with addControls set to false
        collapse: false,

        // show column numbers
        showColumns: false,

        // start with another line number?
        firstLine: 1
    },

    brushByAlias: {},

    init: function(clipboardSwf, settings) {
        dp.SyntaxHighlighter.ClipboardSwf = clipboardSwf;

        if (settings)
            jQuery.extend(jQuery.beautyOfCode.settings, settings);

        if (jQuery.beautyOfCode.isInitialized)
            return;

        // creates a map of each registered brush by alias
        jQuery.each(dp.sh.Brushes, function(i, brush) {
            var aliases = brush.Aliases;

            if (aliases == null)
                return;

            jQuery.each(aliases, function(ii, alias) {
                jQuery.beautyOfCode.brushByAlias[alias] = brush;
            });
        });

        jQuery.beautyOfCode.isInitialized = true;
    },

    addCssForBrush: function(brush, highlighter) {
        if (brush.isCssInitialized)
            return;

        var headNode = $("head")[0];
        if (highlighter.Style && headNode) {
            var styleNode = document.createElement('style');
            styleNode.setAttribute('type', 'text/css');

            if (styleNode.styleSheet) // for IE
                styleNode.styleSheet.cssText = highlighter.Style;
            else // for everyone else
                $(styleNode).text(highlighter.Style);

            headNode.appendChild(styleNode);
        }

        brush.isCssInitialized = true;
    },

    beautifyAll: function() {
        jQuery("pre.code:has(code[class])").each(function(i, item) {

            function getOptionValue(name, list) {
                var regex = new RegExp('^' + name + '\\[(\\w+)\\]$', 'gi');
                var matches = null;

                for (var i = 0; i < list.length; i++)
                    if ((matches = regex.exec(list[i])) != null)
                    return matches[1];

                return null;
            }

            var $item = jQuery(item);
            var $code = $item.children("code");
            var code = $code[0];

            var options = code.className.split(" ");
            var language = options[0];

            var settings = {};

            if ($code.hasClass("boc-nogutter"))
                settings.noGutter = true;

            if ($code.hasClass("boc-nocontrols"))
                settings.addControls = false;

            if ($code.hasClass("boc-showcolumns"))
                settings.showColumns = true;

            if ($code.hasClass("boc-collapse"))
                settings.collapse = true;

            var firstLine = getOptionValue("boc-firstline", options, 1);
            if (firstLine)
                settings.firstLine = firstLine;

            $item.beautifyCode(language, settings);
        });
    }
};

jQuery.fn.beautifyCode = function(language, settings) {

    var saveLanguage = language;
    var saveSettings = settings;

    // iterate all elements
    this.each(function(i, item) {
        var $item = jQuery(item);

        var settings = jQuery.extend({}, jQuery.beautyOfCode.settings, saveSettings);

        var brush = jQuery.beautyOfCode.brushByAlias[saveLanguage];

        if (!brush)
            return;

        // instantiate brush
        highlighter = new brush();

        // set brush options
        jQuery.extend(highlighter, settings);

        jQuery.beautyOfCode.addCssForBrush(brush, highlighter);

        // IE Bug?: code in pre has to be skipped
        // in order to preserver line breaks.
        if ($item.is("pre") && ($code = $item.children("code")))
            $item.text($code.text());

        highlighter.Highlight($item.html());
        highlighter.source = item;

        $item.replaceWith(highlighter.div);
    });
}